IMAT 2024 · Question 26

Q26 - Mendelian and classical genetics

The term "allele" defines: A) The phenotypic manifestation of a given gene B) A coding DNA base for a specific amino acid C) one of several alternative forms of a gene D) A set of coding DNA triplets for a specific amino acid E) A hereditary trait only found in haploid cells
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The correct answer is C) one of several alternative forms of a gene.

An allele is one version of a gene, for example the purple and white versions of the pea flower colour gene.

A describes the phenotype, the trait you can see. B and D are about how bases code for amino acids, which has nothing to do with alleles.

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